Plows like that used to go for $10 - $25. They were cut up for scrap. Now that there aren't as many of them, and more people are settling on a few acres with a small tractor, they are going between $50 - $300. Green ones seem to sell higher around here, orange would be cheaper - collectors have their color biases. :)
As the other person said, your Ford would not do better than a 2-14 plow in most all conditions. In heavy clay soils, that would be a bit much even.